Pivot structure module and image forming equipment
By introducing a rotatable shaft and limiting guide into the pivot module, the problems of slider wear and assembly safety are solved, resulting in a longer service life and a safer assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JUJIA UNITED TECHNOLOGY CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-04-21
AI Technical Summary
The existing pivot module has a small contact area between the slider and the cam in the low angle range, which leads to increased wear. During the assembly process, the fixture restricts the assembly of the cam shaft and poses a safety hazard.
The design employs a rotatable shaft and limiting guide components. Stress and wear are dispersed by rotating the shaft, and the limiting guide components replace the fixture for assembly, ensuring that the slider moves on the predetermined path.
It extends the service life of the pivot structure module, improves assembly efficiency and safety, simplifies the assembly process, and prevents the slider from deviating from the predetermined action path.
Smart Images
Figure CN224149986U_ABST
Abstract
Description
Technical Field
[0001] This application relates to office equipment, and more specifically, to a pivot structure module and an image forming device. Background Technology
[0002] Common office equipment on the market, such as multifunctional office devices, multi-function products / printers / peripherals (MFPs), fax machines, scanners, and printers, are typically equipped with an Automatic Document Feeder (ADF) to improve document processing efficiency. For ease of operation, these ADFs are usually configured with a hinge module featuring free-stop angle support. Such hinge modules typically include a frame, with a cam shaft and a slider housed within the frame. The cam portion of the cam shaft contacts the slider, and a compression spring is located at the bottom of the slider. During the opening and closing of the hinge module, rotating the cam shaft changes the height of the slider, causing the compression spring to deform and provide elastic support. This maintains stable support between the slider and the cam shaft, allowing the ADF to remain stably positioned at multiple opening angles.
[0003] In current technology, to ensure that the pivot module can stably stop at a specific opening angle even without external force, the compression spring located at the bottom of the slider must have a high spring force coefficient. However, when the opening angle of the pivot module is maintained within a low angle range, the increased compression of the spring leads to a relatively increased force exerted by the spring on the slider. This causes the slider to maintain frictional contact with the cam for a relatively small contact area for an extended period, resulting in accelerated wear on the slider surface.
[0004] Furthermore, the assembly method of the pivot module also has its inconveniences. Specifically, the current assembly method mainly involves first assembling the slider and compression spring into the frame, and then using a fixture to press the slider and compression spring down to a specific height before the cam shaft can be pivotally installed into the shaft hole of the frame. After assembling the cam shaft, the fixture is removed. However, since the fixture occupies the space required for the cam shaft, the assembly of the cam shaft is restricted, thereby reducing assembly efficiency and accuracy. In addition, the use of the fixture is due to the high elasticity coefficient of the compression spring; however, precisely because the compression spring has a high elasticity coefficient, it is prone to rebound during the assembly process, which may endanger the safety of the operator. Utility Model Content
[0005] This application provides a pivot structure module suitable for use in office equipment such as multifunction office equipment, fax machines, scanners, printers, or office machines. During operation, the pivot structure module has a rotatable shaft on the slider, which serves as the contact and abutment component with the cam. This rotation disperses stress and wear, thereby extending the service life of the pivot structure module. Furthermore, the cooperation between the shaft and the limiting structure replaces the fixtures used in traditional assembly processes, freeing the pivot structure module from fixture limitations and improving assembly safety.
[0006] In a first aspect, embodiments of this application provide a pivot structure module, comprising: a housing, a limiting member, a slider member, and a cam member.
[0007] The outer casing includes a housing that defines an accommodating space and an opening.
[0008] The limiting member is located in the accommodating space and includes two limiting guides. The two limiting guides are spaced apart along a first horizontal direction on opposite sides of the housing, and each limiting guide has a limiting portion.
[0009] The slider component is disposed in the accommodating space and includes a slider, at least one elastic element and a shaft. One end of the at least one elastic element is disposed at the bottom of the housing, and the slider is disposed at the other end of the at least one elastic element. The slider has a receiving groove located on the side of the slider facing the opening and extending along the first horizontal direction. The shaft is rotatably disposed in the receiving groove.
[0010] The cam component includes a plate and a cam. The plate is pivotally connected to the housing and is disposed adjacent to the opening. The cam is disposed on the side of the plate facing the opening.
[0011] Each limiting guide member has a limiting slide, and both ends of the shaft are respectively fitted into the limiting slides of the two limiting guide members, allowing it to move in a vertical direction. The height of the shaft in the vertical direction is not higher than the limiting portion. The cam abuts against the shaft, causing the shaft to move along the limiting slide, thereby driving the slider to move.
[0012] In some embodiments of this application, the housing has a top abutment surface on one side adjacent to the opening and extending along the first horizontal direction. The cam member further includes at least one abutment portion. The pivot and the side of the housing with the top abutment surface extend in the same direction. At least one abutment portion is disposed on the side of the plate adjacent to the top abutment surface. The extending direction of the plate and the second horizontal direction define an angle. When the angle is the maximum opening angle, at least one abutment portion abuts against the top abutment surface of the housing. The cam and the shaft do not contact each other, and the shaft abuts against the limiting portion of the two limiting guides. When the angle is less than or equal to a preset opening angle, at least one abutment portion moves away from the top abutment surface, the cam abuts against the shaft, causing the shaft to move along the limiting slide and drive the slider to move towards the bottom of the housing. The preset opening angle is less than the maximum opening angle.
[0013] In some embodiments of this application, each of the limiting guide members further has two guide portions, which are respectively located at both ends of the limiting portion and extend in a vertical direction. The limiting portion and the two guide portions of each limiting guide member together define the limiting slide.
[0014] In some embodiments of this application, the slider has two extensions extending along the first horizontal direction on its opposite sides, so that the slider has an H-shaped structure. The two extensions are respectively adjacent to the two guides of the corresponding limiting guides, so that the slider can move along the vertical direction, and the two guides on the same side of the slider are located between the corresponding two extensions.
[0015] In some embodiments of this application, the two limiting guides are integrally formed with the housing, and the two guiding portions of each limiting guide extend from both ends of the limiting portion, so that each limiting guide presents a U-shaped structure.
[0016] In some embodiments of this application, each limiting guide has a sheet-like body, two limiting portions and the two guiding portions. The sheet-like body is disposed on the inner side of the housing, and the two limiting portions and the two guiding portions are disposed on the sheet-like body. The two limiting portions are spaced apart along the vertical direction.
[0017] In some embodiments of this application, the limiting member further has at least one reinforcing member, which is a sheet-like structure disposed on the bottom surface and / or one of the sides of the housing, and connected to the sheet-like body of at least one of the two limiting guide members.
[0018] In some embodiments of this application, the trough is provided for holding grease, and the port of the trough is provided with a swivel bearing support, the shaft is rotatably supported by the swivel bearing support, and thus is disposed in the trough through the swivel bearing support.
[0019] In some embodiments of this application, the shaft has a central shaft portion, two side shaft portions and two bushings. The central shaft portion is accommodated in the receiving groove. The two side shaft portions extend coaxially from both ends of the central shaft portion and their inner diameters are smaller than the inner diameters of the central shaft portion. The two side shaft portions extend into the limiting slides of the two limiting guides. The two bushings are respectively sleeved on the two side shaft portions.
[0020] In some embodiments of this application, the shaft body further has an engaging portion, which is coaxially disposed on the central shaft portion. The slider further has a groove that passes through the receiving groove for accommodating the engaging portion. The cam is recessed with an engaging surface, and when the cam abuts against the central shaft portion of the shaft body, the engaging surface abuts against the engaging portion.
[0021] In some embodiments of this application, the slider component further includes a bearing seat, the bearing seat having a supporting portion, two fixing portions, and a fitting portion extending along the first horizontal direction. The supporting portion is disposed on the slider, the fitting portion is disposed on the side of the supporting portion facing the slider and fitting into the receiving groove, the two fixing portions are respectively disposed at both ends of the supporting portion to limit the shaft body, wherein the shaft body is placed on the supporting portion, thereby being disposed in the receiving groove through the bearing seat, and the shaft body passes through the two fixing portions.
[0022] In some embodiments of this application, the housing further includes at least one fixing member disposed at the bottom of the housing and located in the accommodating space. Each fixing member has a fixing protrusion and an annular portion surrounding the fixing protrusion. One end of at least one elastic member is disposed on at least one fixing member and fitted into the space defined by the fixing protrusion and the annular portion.
[0023] Secondly, embodiments of this application provide an image forming device, including a pivot structure module as described in any of the preceding embodiments.
[0024] This application has at least the following beneficial effects: By rotatably mounting the shaft on the slider and using the shaft to abut against the cam, when the pivot structure module is in a closed or preset angle open state, the stress and friction between the cam and the slider component are dispersed by rotation, thereby reducing wear and extending the product's service life. Furthermore, the limiting guide not only limits the height of the slider component along the vertical direction but also guides the movement of the slider, preventing it from detaching from the predetermined action path during movement. In addition, during the assembly of the pivot structure module of this application, the limiting component can also cooperate with the shaft to limit the slider and the elastic element disposed within the housing, replacing the fixture used in traditional assembly processes. This ensures that the configuration space of the cam component is not affected, making the assembly process simpler, more convenient, and improving assembly safety. Attached Figure Description
[0025] The above and other aspects, features, and advantages of certain embodiments of this application will become more apparent from the following description taken in conjunction with the accompanying drawings, wherein:
[0026] Figure 1A and Figure 1B These are perspective views of the pivot structure module of the first embodiment of this application from different angles.
[0027] Figure 2A This is an exploded view of the pivot structure module of the first embodiment of this application.
[0028] Figure 2B This is an exploded view of the slider and shaft of the pivot structure module according to the first embodiment of this application.
[0029] Figure 3 This is a cross-sectional view of the pivot structure module of the first embodiment of this application.
[0030] Figure 4A and Figure 4B These are a perspective view and a top view of the outer shell of the pivot structure module according to the first embodiment of this application.
[0031] Figure 4C This is a cross-sectional view of the outer casing of the pivot structure module according to the first embodiment of this application.
[0032] Figure 5A , Figure 5B and Figure 5C This is a side sectional view of the pivot structure module of the first embodiment of this application, used to illustrate the implementation states of its cam component in the maximum opening angle, preset opening angle and closed state.
[0033] Figure 6This is a schematic diagram of a pivot structure module configured in an image forming device according to the first embodiment of this application.
[0034] Figure 7 This is a perspective view of the pivot structure module of the second embodiment of this application.
[0035] Figure 8 This is an exploded view of the pivot structure module of the second embodiment of this application.
[0036] Figure 9 This is a cross-sectional view of the pivot structure module according to the second embodiment of this application.
[0037] Figure 10 This is an exploded view of another embodiment of the pivot structure module of the second embodiment of this application.
[0038] Figure 11 This is a perspective view of the pivot structure module according to the third embodiment of this application.
[0039] Figure 12 This is an exploded view of the pivot structure module according to the third embodiment of this application.
[0040] Figure 13 This is a front cross-sectional view of the pivot structure module according to the third embodiment of this application.
[0041] Figure 14 This is a perspective view of the pivot structure module of the fourth embodiment of this application.
[0042] Figure 15A This is an exploded view of the pivot structure module according to the fourth embodiment of this application.
[0043] Figure 15B This is an exploded view of the slider and shaft of the pivot structure module according to the fourth embodiment of this application.
[0044] Figure 16A and Figure 16B These are front sectional views and side sectional views of the housing of the pivot structure module according to the fourth embodiment of this application.
[0045] Figure 17 This is a perspective view of the pivot structure module according to the fifth embodiment of this application.
[0046] Figure 18A This is an exploded view of the pivot structure module according to the fifth embodiment of this application.
[0047] Figure 18B This is an exploded view of the slider and bearing seat of the pivot structure module according to the fifth embodiment of this application.
[0048] Figure 19 This is a side sectional view of the pivot structure module according to the fifth embodiment of this application.
[0049] The following are explanations of some of the reference numerals in the accompanying drawings:
[0050] 100: Pivot structure module; 213: Limiting slide;
[0051] 200: Image forming equipment; 214: Sheet-shaped body;
[0052] 10: Outer shell; 22: Reinforcing parts;
[0053] 11: Housing; 30: Slider component;
[0054] 111: Abutting against the top surface; 31: Slider;
[0055] 112: Fastener; 311: Receiving groove;
[0056] 1121: Fixed protrusion; 3111: Bearing support;
[0057] 1122: Annular portion; 312: Extension portion;
[0058] 113: partition; 313: groove;
[0059] 12: Accommodation space; 32: Elastic element;
[0060] 13: Opening; 33: Shaft;
[0061] 20: Limiting component; 331: Central shaft portion;
[0062] 21: Limiting guide; 332: Side shaft part;
[0063] 211: Limiting part; 333: Bushing;
[0064] 212: Guiding part; 334: Engaging part;
[0065] 34: Shaft seat; 43: Cam;
[0066] 341: Bearing part; 431: Meshing surface;
[0067] 342: Fixed part; 50: Pivot;
[0068] 343: Fitting part; X: First horizontal direction;
[0069] 40: Cam component; Y: Second horizontal direction;
[0070] 41: Plate; Z: Vertical direction;
[0071] 42: The part that rests against the ground; θ: The included angle. Detailed Implementation
[0072] In the following description, embodiments of this application will be explained in detail with reference to the accompanying drawings. However, this application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the application more thorough and complete, and to fully convey the concept of the application to those skilled in the art. In the various drawings, all figures are exemplary illustrations of this application for clarity and ease of explanation and do not represent the actual size of the product. Furthermore, the dimensional proportions between components in the drawings are not intended to limit the actual product of this application.
[0073] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.
[0074] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0075] This application provides a pivot structure module 100, suitable for configuration in, for example, Figure 6 The image forming device 200 shown can be, for example, an office device such as a multifunction office machine, fax machine, scanner, printer, or office computer. In one embodiment of this application, the image forming device 200 includes a pivot structure module 100 for providing a multi-angle support (free stop angle) function to stably stop at multiple different opening angles. The pivot structure module 100 can be, for example, a paper feed device configured in the image forming device 200, but is not limited thereto.
[0076] See Figure 1A and Figure 2A The pivot structure module 100 of the first embodiment of this application includes: a housing 10, a limiting member 20, a slider member 30, a cam member 40, and a pivot 50.
[0077] See Figure 4A , 4B and Figure 4CThe outer casing 10 includes a housing 11. The housing 11 has at least one fastener 112 and defines an accommodating space 12 and an opening 13, and a top surface 111 is formed on one side of the housing 11 adjacent to the opening 13 and extending along a first horizontal direction X.
[0078] In the first embodiment, the housing 11 has two fixing members 112 disposed at the bottom of the housing 11 and located in the accommodating space 12, and each fixing member 112 has a fixing protrusion 1121 and an annular portion 1122 surrounding the fixing protrusion 1121. The formation position and number of the fixing members 112 correspond to the elastic members 32 of the slider member 30.
[0079] In the first embodiment, the housing 11 further has a partition 113, which is disposed between the two fixing members 112 to improve the structural rigidity inside the housing 11 and prevent the housing 11 from bending or deforming when subjected to external forces.
[0080] The limiting member 20 is located in the accommodating space 12 and includes two limiting guide members 21, which are spaced apart along the first horizontal direction X on opposite sides of the housing 11. Each limiting guide member 21 has a limiting portion 211 and two guide portions 212. The two guide portions 212 are located at both ends of the limiting portion 211 and extend along the vertical direction Z, thus defining a limiting slide 213 together with the limiting portion 211. In the first embodiment, the two limiting guide members 21 are integrally formed with the housing 11, and the two guide portions 212 of each limiting guide member 21 extend from both ends of the limiting portion 211, so that each limiting guide member 21 has a U-shaped structure.
[0081] It should be noted that the number of guide portions 212 provided in each limiting guide member 21 may vary depending on the requirements. For example, the limiting guide member 21 may have only a single guide portion 212 connected to one end of the limiting portion 211, or it may not provide a guide portion 212. As long as the limiting guide member 21 has the limiting portion 211 and can limit the slider member 30, it is not limited to the above example.
[0082] See Figure 2A , Figure 2B and Figure 3 The slider component 30 is disposed in the accommodating space 12 and includes a slider 31, at least one elastic element 32, and a shaft 33. One end of the at least one elastic element 32 is disposed at the bottom of the housing 11, and as shown... Figure 5AThe corresponding fixing member 112 is shown, and it fits into the space defined by the fixing protrusion 1121 and the annular portion 1122. In the first embodiment, the slider member 30 is described as having two elastic members 32 as an example, so that the force on the slider 31 along the vertical direction Z is more even, avoiding skewing during movement. However, in actual implementation, the number and distribution of the elastic members 32 can vary according to actual needs and are not limited to the above example.
[0083] The slider 31 is disposed at the other end of the two elastic members 32 and has a receiving groove 311. The receiving groove 311 is located on the side of the slider 31 facing the opening 13 and extends along the first horizontal direction X. The port of the receiving groove 311 is provided with a plurality of swivel bearing abutments 3111, and the shaft 33 is rotatably supported by the swivel bearing abutments 3111, thereby being disposed in the receiving groove 311 through the swivel bearing abutments 3111. The receiving groove 311 can accommodate grease, thereby providing lubrication to the shaft 33 disposed in the receiving groove 311, thereby reducing the frictional resistance of the shaft 33 when rotating relative to the slider 31 and improving its rotational stability. In the first embodiment, the shaft 33 is a metal shaft, but is not limited thereto. In the first embodiment, the slider 31 has two extensions 312 extending along the first horizontal direction X on opposite sides, so that the slider 31 has an H-shaped structure. The two extensions 312 are respectively adjacent to the two guides 212 of the corresponding limiting guides 21, and the two guides 212 located on the same side of the slider 31 are located between the corresponding two extensions 312, so as to provide guidance for the movement of the slider 31, so that the slider 31 can move along the vertical direction Z.
[0084] See Figure 2A , Figure 2B and Figure 3 The cam member 40 includes a plate 41, a cam 43, and at least one abutment portion 42. The plate 41 is pivotally connected to the housing 11 by a pivot 50 and is disposed adjacent to the opening 13. The cam 43 is disposed on the side of the plate 41 facing the opening 13. The pivot 50 and the housing 11, along with the side of the abutment surface 111, extend in the same direction. At least one abutment portion 42 is disposed on the side of the plate 41 adjacent to the abutment surface 111. In the first embodiment, the cam member 40 includes two spaced abutment portions 42 as an example (e.g., Figure 1B (as shown), but not limited to this.
[0085] See Figure 5A , Figure 5B and Figure 5C , Figure 5A , Figure 5B and Figure 5C For the corresponding Figure 1A The cross-sectional structure of the cleavage line VV in the figure represents the structural state of the pivot structure module 100 in the maximum opening angle state, the preset opening angle state, and the closed state, respectively.
[0086] The extension direction of the plate 41 and the second horizontal direction Y together define an angle θ. When the angle θ is as follows... Figure 5A The maximum opening angle (e.g., 75 degrees) is shown. The cam 43 and the shaft 33 do not contact each other. The abutting part 42 of the cam member 40 abuts against the abutting top surface 111 of the housing 11, thereby providing a support for the cam 43 and helping it to maintain the maximum opening angle. At this time, the two ends of the shaft 33 abut against the limiting part 211 of the two limiting guide members 21, and are limited by the limiting part 211 to their highest position along the vertical direction Z.
[0087] See Figure 5B When the included angle θ is less than or equal to a preset opening angle (e.g., 70 degrees), the abutment part 42 moves away from the abutment top surface 111, and the cam 43 abuts against the shaft 33, causing the shaft 33 to move along the limiting slide 213 and drive the slider 31 to move towards the bottom of the housing 11. At this time, the slider 31 and the shaft 33 are subjected to force by the cam 43 and simultaneously receive elastic support force from the elastic element 32, so that the pivot structure module 100 can stably remain in the preset opening angle state. Since the shaft 33 can rotate relative to the slider 31 and the cam 43, the stress and friction between the cam 43 and the slider component 30 are dispersed, improving the wear problem of the pivot structure module 100 when it is in the preset opening angle state. Wherein, the preset opening angle is less than the maximum opening angle, and the pivot structure module 100 can stably stay at multiple different support angles within the angle range between the preset opening angle and 0 degrees, thus having a multi-angle support function.
[0088] See Figure 5CWhen the pivot structure module 100 is fully closed to an included angle θ of 0 degrees, the cam 43 drives the slider 31 to move further towards the bottom of the housing 11, further increasing the compression of the elastic element 32. At this time, the slider 31 and the shaft 33 are pressed by the cam 43 and move closer to the bottom of the housing 11 along the limiting slide 213, and the elastic support force of the elastic element 32 on the slider 31 is also increased. The shaft 33 can rotate during the movement to maximize the distribution of stress and friction between the cam 43 and the slider component 30, avoiding stress concentration in the contact area between the cam 43 and the slider component 30, and effectively reducing wear.
[0089] In some embodiments, during the assembly of the pivot structure module 100 of the first embodiment of this application, the elastic member 32 and the slider 31 are first placed in the accommodating space 12; then, a jig is used to press the slider 31 and the elastic member 32 down toward the bottom of the housing 11 to a predetermined height; then, the shaft 33 is placed into the housing 11 at an inclined angle, and both ends of the shaft 33 are respectively inserted into the limiting slides 213 of the two limiting guides 21, and the jig is removed. At this time, the slider 31 will be subjected to an elastic restoring force provided by the elastic member 32 after the jig is removed, and will move away from the bottom of the housing 11, and will be limited by the shaft 33 to a predetermined height position, so that the height position of the shaft 33 is not higher than the limiting part 211; finally, the plate 41 of the cam member 40 is pivotally connected to the housing 11, thereby completing the assembly of the pivot structure module 100. Since the fixture inside the housing 11 is removed when assembling the cam component 40, and the height position of the slider 31 along the vertical direction Z is limited by the cooperation of the shaft 33 and the limiting part 211 to replace the function of the fixture, the configuration space of the cam component 40 is not restricted, and the assembly is more convenient. The operator is not affected by the elastic element 32 and the rebounding slider 31, which improves the safety during the assembly process.
[0090] See Figure 7 , Figure 8 and Figure 9In the second embodiment of this application, the pivot structure module 100 further includes a limiting member 20 having at least one reinforcing member 22. The at least one reinforcing member 22 is a sheet-like structure, disposed in the accommodating space 12, and located on the bottom surface and / or one side surface of the housing 11. The limiting guide member 21 of the limiting member 20 can be formed on the reinforcing member 22 and integrally molded with it. Each limiting guide member 21 has a sheet-like body 214, two limiting portions 211, and two guiding portions 212. The sheet-like body 214 is disposed on the inner side surface of the housing 11, and the two limiting portions 211 and the two guiding portions 212 are disposed on the sheet-like body 214, jointly defining the limiting slide 213. The two limiting portions 211 are spaced apart along the vertical direction Z. However, the number of limiting parts 211 in each limiting guide 21 may vary depending on product requirements. In other embodiments, the number of limiting parts 211 may also be one limiting part 211 adjacent to the pivot 50, so that the shaft 33 is limited by the limiting part 211 to its highest position along the vertical direction Z.
[0091] In the second embodiment, the limiting member 20 has multiple reinforcing members 22, respectively disposed on the bottom surface of the housing 11 and the side surface where the limiting guide member 21 is not disposed, and connected to the sheet-like body 214 of at least one of the two limiting guide members 21. Preferably, the limiting member 20 is made of metal material, which, in addition to guiding and limiting the slider member 30, can also enhance the mechanical strength of the housing 11.
[0092] In some embodiments, each fixing member 112 has only a fixing protrusion 1121, and one end of each of the two elastic members 32 is respectively sleeved on the fixing protrusion 1121.
[0093] See Figure 10 In other embodiments of the second embodiment, the limiting member 20 may not be provided with the reinforcing member 22, but the mechanical strength of the housing 11 may be improved by the provision of the sheet-like body 214 alone.
[0094] See Figure 11 , Figure 12 and Figure 13The pivot structure module 100 of the third embodiment of this application includes a shaft 33 having a central shaft portion 331, two side shaft portions 332, and two bushings 333. The central shaft portion 331 is disposed in the receiving groove 311. The two side shaft portions 332 extend coaxially from both ends of the central shaft portion 331 and correspondingly extend into the limiting slides 213 of the two limiting guides 21. The inner diameter of the two side shaft portions 332 is smaller than the inner diameter of the central shaft portion 331. The two bushings 333 are respectively sleeved on the two side shaft portions 332 to avoid direct friction between the shaft 33 and other components. This not only reduces wear but also improves the problem of abnormal noise caused by direct collision or friction between the shaft 33 and other components (such as the limiting guides 21 or the sliders 31). Furthermore, the bushing 333 can be considered as a consumable. When the shaft 33 wears out due to long-term use, only the bushing 333 needs to be replaced, without replacing the entire shaft 33.
[0095] Preferably, the central shaft portion 331 and the two side shaft portions 332 are made of metal, and the two bushings 333 are made of plastic or oil-impregnated copper. When the shaft body 33 is disposed in the receiving groove 331, the two bushings 333 help to reduce jamming or shaking.
[0096] See Figure 14 , Figure 15A and Figure 15B The pivot structure module 100 of the fourth embodiment of this application includes a shaft 33 having a central shaft portion 331, two side shaft portions 332, two bushings 333, and an engagement portion 334. The engagement portion 334 is coaxially disposed on the central shaft portion 331. The cam 43 has a recessed engagement surface 431 whose surface structure matches and is located on the engagement portion 334. The slider 31 also has a groove 313 that passes through the receiving groove 311, and the depth of the groove 313 is greater than the depth of the receiving groove 311.
[0097] See also Figure 16A and 16B In the fourth embodiment, the meshing portion 334 and the meshing surface 431 are gear-shaped structures. When the shaft 33 is disposed in the receiving groove 311, the groove 313 accommodates the meshing portion 334. When the cam 43 abuts against the central shaft portion 311 of the shaft 33, the meshing surface 431 abuts against the meshing portion 334. The meshing portion 334 and the meshing surface 431 can increase the contact area between the cam 43 and the shaft 33, thereby effectively reducing local wear. Furthermore, the shape and structure of the meshing portion 334 and the meshing surface 431, such as the tooth pitch or meshing depth, can be designed according to a predetermined preset opening angle, thereby improving the stability of the pivot structure module 100 when it remains in the preset opening angle state.
[0098] See Figure 17 , Figure 18A and Figure 18B The pivot structure module 100 of the fifth embodiment of this application further includes a bearing seat 34 in the slider component 30. The bearing seat 34 has a supporting portion 341, two fixing portions 342, and a fitting portion 343 extending along the first horizontal direction X. The supporting portion 341 is disposed on the slider 31, the fitting portion 343 is disposed on the side of the supporting portion 341 facing the slider 31 and fitting into the receiving groove 311, the two fixing portions 342 are respectively disposed at both ends of the supporting portion 341, and the shaft 33 is placed on the supporting portion 341 and passes through the two fixing portions 342, thereby being disposed in the receiving groove 311 through the bearing seat 34.
[0099] See also Figure 19 In the fifth embodiment, when the cam 43 moves from the maximum opening angle to the closed state, the cam 43 abuts against the shaft 33, and the shaft 33 can rotate relative to the bearing 34, dispersing the contact stress and friction between the slider component 30 and the cam 43, thereby reducing wear. The two fixing parts 342, in addition to limiting the shaft 33, also prevent the shaft 33 from directly rubbing against other components, thereby reducing wear. The receiving groove 311 is used to limit the bearing 34 and prevent the bearing 34 from leaving its original position during the movement of the slider component 30.
[0100] In summary, the pivot structure module 100 of this application, by rotatably mounting the shaft 33 onto the slider 31, allows the pivot structure module 100 to distribute the stress and friction between the cam 43 and the slider member 30 through the rotation of the shaft 33, regardless of whether the pivot structure module 100 is in a closed state or an open state at a preset angle. This reduces wear and extends the service life of the product. Furthermore, the limiting guide 21 not only limits the height position of the slider member 30 along the vertical direction Z, but also guides the movement of the slider 31, preventing the slider 31 from deviating from the predetermined movement path during movement. Furthermore, during the assembly of the pivot structure module 100, the limiting member 20 can also cooperate with the shaft 33 to limit the height position of the slider 31 and the elastic member 32 disposed in the housing 11, thereby replacing the fixture in the traditional assembly process and ensuring that the configuration space of the cam member 40 is not affected. Therefore, the assembly process of the pivot structure module 100 of this application is simpler and more convenient, and can also improve the safety of assembly, thus achieving the desired effect.
Claims
1. A pivot structure module, characterized by, Include: The outer casing includes a housing that defines an accommodating space and an opening; A limiting member, located in the accommodating space, includes two limiting guides, which are spaced apart along a first horizontal direction on opposite sides of the housing, and each limiting guide has a limiting portion; A slider component, disposed in the accommodating space, includes a slider, at least one elastic element and a shaft. One end of the at least one elastic element is disposed at the bottom of the housing, and the slider is disposed at the other end of the at least one elastic element. The slider has a receiving groove located on the side of the slider facing the opening and extending along the first horizontal direction. The shaft is rotatably disposed in the receiving groove. as well as A cam component includes a plate and a cam, the plate being pivotally connected to the housing and disposed adjacent to the opening, and the cam being disposed on the side of the plate facing the opening; Each limiting guide has a limiting slide, and the two ends of the shaft are respectively fitted into the limiting slides of the two limiting guides, so that it can move in the vertical direction, and the height of the shaft in the vertical direction is not higher than the limiting part. The cam abuts against the shaft, causing the shaft to move along the limiting slide, thereby driving the slider to move.
2. The pivot structure module of claim 1, wherein, The housing has a top abutment surface on one side adjacent to the opening and extending along the first horizontal direction. The cam member also includes at least one abutment portion. The pivot and the side of the housing with the top abutment surface extend in the same direction. At least one abutment portion is disposed on the side of the plate adjacent to the top abutment surface. The extension direction of the plate and the second horizontal direction define an angle. When the angle is the maximum opening angle, at least one abutment portion abuts against the top abutment surface of the housing. The cam and the shaft do not contact each other, and the shaft abuts against the limiting portion of the two limiting guides. When the angle is less than or equal to a preset opening angle, at least one abutment portion moves away from the top abutment surface, the cam abuts against the shaft, causing the shaft to move along the limiting slide and drive the slider to move towards the bottom of the housing. The preset opening angle is less than the maximum opening angle.
3. The pivot assembly of claim 1, wherein: Each of the limiting guide members also has two guide portions, which are respectively located at both ends of the limiting portion and extend in a vertical direction. The limiting portion and the two guide portions of each limiting guide member together define the limiting slide.
4. The pivot assembly of claim 3, wherein: The slider has two extensions extending along the first horizontal direction on its opposite sides, giving the slider an H-shaped structure. The two extensions are respectively adjacent to the two guides of the corresponding limiting guide, allowing the slider to move along the vertical direction. The two guides on the same side of the slider are located between the corresponding two extensions.
5. The pivot assembly of claim 3, wherein: The two limiting guides are integrally formed with the housing, and the two guiding portions of each limiting guide extend from both ends of the limiting portion, so that each limiting guide presents a U-shaped structure.
6. The pivot assembly of claim 3, wherein: Each limiting guide has a sheet-shaped body, two limiting parts and the two guiding parts. The sheet-shaped body is disposed on the inner side of the housing, and the two limiting parts and the two guiding parts are disposed on the sheet-shaped body. The two limiting parts are spaced apart along the vertical direction.
7. The pivot assembly of claim 6, wherein: The limiting member also has at least one reinforcing member, which is a sheet-like structure disposed on the bottom surface and / or one of the sides of the housing, and connected to the sheet-like body of at least one of the two limiting guide members.
8. The pivot assembly of claim 1, wherein: The container is used to hold grease, and the port of the container is provided with a swivel bearing support. The shaft is rotatably supported by the swivel bearing support, thereby being disposed in the container through the swivel bearing support.
9. The pivot assembly of claim 1, wherein: The shaft has a central shaft portion, two side shaft portions and two bushings. The central shaft portion is disposed in the receiving groove. The two side shaft portions extend coaxially from both ends of the central shaft portion, and their inner diameters are smaller than the inner diameters of the central shaft portion. The two side shaft portions extend into the limiting slides of the two limiting guides. The two bushings are respectively sleeved on the two side shaft portions.
10. The pivot assembly of claim 9, wherein: The shaft also has a meshing part, which is coaxially disposed on the central shaft. The slider also has a groove that passes through the receiving groove to accommodate the meshing part. The cam is recessed with a meshing surface. When the cam abuts against the central shaft of the shaft, the meshing surface abuts against the meshing part.
11. The pivot assembly of claim 1, wherein: The slider component further includes a bearing seat, which has a supporting portion, two fixing portions, and a fitting portion extending along the first horizontal direction. The supporting portion is disposed on the slider, and the fitting portion is disposed on the side of the supporting portion facing the slider and fitting into the receiving groove. The two fixing portions are respectively disposed at both ends of the supporting portion to limit the shaft body. The shaft body is placed on the supporting portion, thereby being disposed in the receiving groove through the bearing seat, and the shaft body passes through the two fixing portions.
12. The pivot assembly of claim 1, wherein: The housing also has at least one fixing member disposed at the bottom of the housing and located in the accommodating space. Each fixing member has a fixing protrusion and an annular portion surrounding the fixing protrusion. One end of at least one elastic member is disposed on at least one fixing member and is fitted into the space defined by the fixing protrusion and the annular portion.
13. An image forming apparatus characterized by comprising: It is equipped with a pivot structure module as described in any one of claims 1 to 12.